In fruit flies, brown body color (
b.is dominant to black body color ( b). a brown fruit fly is crossed with a black fruit fly. both flies are purebred. what will the offspring's genotypes be?
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The offspring's genotype will be Bb, as both the parents are purebred.
What is the law of dominance?When parents of purebred crossed together, in the next generation the hybrid offspring exhibited only the dominant trait. The purebred dominant trait will mask the recessive trait.
When purebred dominant flies crossed with the purebred recessive flies. Dominant fly will mask the recessive trait in all the offspring in the next generation. In the Law of dominance dominant traits always mask the recessive traits.
The cross between the parents: Bb and bb is attached to the image below.
Therefore, so the genotype is heterozygous Bb and shows a dominant phenotype.
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Related Questions
Eli can remember what he did last week, but he cannot remember the birth of his cousin (which happened immediately before eli received a head injury in a motorcycle accident). what is eli's condition?
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In 1944 charlie chaplin was involved in a legal battle over the paternity of a child born to joan berry, a young starlet. the baby was blood type b, the mother a, and chaplin o. from what you know about the inheritance of blood types, could chaplin have been the father of the child? (at the time of the trial, blood group evidence was not admissible in california courts. charlie chaplin was declared responsible for the child's support.)
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Final answer:
An individual with blood type O can be the legitimate child of parents with blood types A and B if both parents carry the recessive 'i' allele.
Explanation:
In the case of blood type inheritance, if an individual has blood type O, which is represented by the genotype ii, they must have received an 'i' allele from each parent. On the other hand, if one parent has blood type A and the other has blood type B, there are a few possible genotypes for each. The blood type A parent could be either genotype AA or AO, and the blood type B parent could be either genotype BB or BO.
If both parents were carriers of the 'i' allele, meaning that the blood type A parent has the genotype AO and the blood type B parent has the genotype BO, then they could indeed produce an offspring with the genotype ii, resulting in a child with blood type O. This is because the child would inherit the 'i' allele from each parent.
Therefore, yes, an individual with blood type O could certainly be the legitimate child of parents where one has blood type A and the other blood type B, as long as both parents carry the recessive 'i' allele.
Which feature signifies to astronomers that a distant star is part of a planetary system? a.) The star periodically dims. b.)The star expands into a red giant. c.)The star moves through the sky. d.)The star continuously gets brighter.
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Answer: a) The star periodically dims.
A star is the body of gas in which nuclear fusion of gases like helium and hydrogen takes place due to this reason the star glows or dim. Star gets the ability to generate light because of this nuclear fusion which cannot be observed in planets although the process of generation of star and planet is the same. In distantly located star under observation, it's luminosity ( the property of emitting lighting) is controlled by size of the star, the larger the size of the star it will have greater surface area the more profound will be the nuclear fusion in it and more light will be emitted. Second factor is the gaseous interaction of gases in and around the star and their temperature which causes the change in the light which has to pass through a layer of these gases. Therefore, the distant star observed will show light fluctuations.
The star periodically dims is a feature that signifies to astronomers that a distant star is part of a planetary system.
Who is astronomer?A scientist who concentrates their research on a particular issue or area outside the purview of Earth is called an astronomer in the science of astronomy.
They perform observational (by evaluating the data) or theoretical astronomy when observing astronomical objects including stars, planets, moons, comets, and galaxies.
Planetary science, solar astronomy, the creation or evolution of stars, or the formation of galaxies are a few examples of subjects or fields that astronomers study. Physical cosmology, which studies the entire Universe, is a related but separate topic.
Therefore, The star periodically dims is a feature that signifies to astronomers that a distant star is part of a planetary system.
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What role does phytoplankton Play in the food web of many aquatic ecosystems
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my teacher told
In the induced-fit model of enzymes, a substrate associates itself with which part of an enzyme?
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Final answer:
In the induced-fit model of enzyme action, a substrate associates with the enzyme's active site, where the enzyme's conformation undergoes changes to achieve an ideal fit and reaction conditions.
Explanation:
In the induced-fit model of enzymes, a substrate associates with the active site of an enzyme.
Understanding the induced-fit model begins with the substrate approaching the enzyme. Substrates bind to the enzyme's active site, forming an enzyme-substrate complex (a) and (b). The enzyme then undergoes conformational changes (c) to better accommodate the substrate, enhancing the reaction by correctly orienting the substrate towards its transition state. Finally, the reaction products are released, and the enzyme returns to its original form, ready to catalyze another reaction (d).
This model illustrates how enzyme flexibility allows active sites to adjust their shape for different substrates while maintaining specificity, with only certain substrates fitting into the active site. This is due to the enzyme's ability to undergo dynamic structural adjustments, ensuring a precise interaction between the enzyme and the substrate, which facilitates the catalytic process.
"according to ackerman, exactly what causes leaves to change color? what particular conditions cause the brightest colors in autumn leaves?"
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1 pts maps can be deliberately or unintentionally developed to present false information
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What happens to ammonia when it isn’t taken up by plants?
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How does the equation for cellular respiration compared with the equation for photosynthesis?
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The catabolic (bond-breaking) process in plants is cellular respiration, in which glucose is broken down with O2 by glycolysis (cytoplasm only) and mitochondrial reactions (Krebs cycle and E.T.C.) to yield CO2 and H2O. These reactions recycle ADP/ATP and NAD/NADH. The CO2 and water produced by cellular respiration feed into the photosynthetic processes, and in turn, the O2 and glucose resulting from photosynthesis supply the respiratory reactions.
Final answer:
Photosynthesis and cellular respiration are two essential processes in biology. The equation for photosynthesis produces glucose and oxygen, while the equation for cellular respiration uses glucose and oxygen to produce carbon dioxide, water, and ATP.
Explanation:
Photosynthesis and cellular respiration are two processes that are connected and essential for life. The equation for photosynthesis is: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. On the other hand, the equation for cellular respiration is the direct opposite: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP (energy).
Photosynthesis uses energy from sunlight to convert carbon dioxide and water into glucose and oxygen, while in cellular respiration, glucose and oxygen are broken down to produce carbon dioxide, water, and ATP. Therefore, the equations for the two processes represent the reverse reactions of each other.
Which type of pacemaker discharges impulses at a single, steady rate, regardless of the heart's own electrical activity?
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Final answer:
Fixed-rate pacemakers provide continuous electrical impulses at a preset rate to the heart, regardless of the heart's natural electrical activity, to maintain a regular heart rhythm.
Explanation:
Fixed-rate pacemakers are the type of artificial pacemakers that discharge impulses at a single, steady rate, regardless of the heart's own electrical activity. The natural pacemaker of the heart, the sinoatrial (SA) node, typically initiates an electrical impulse that leads to a coordinated heartbeat. However, when the heart's electrical system malfunctions, causing arrhythmias or fibrillation, a fixed-rate pacemaker is used to ensure the heart continues to beat regularly. These devices continuously deliver electrical impulses at a preset rate, without sensing the heart's inherent rhythm.
Which of the following is an example of a beneficial mutation?
a mutation causing uncontrolled cell division in human tissue cells
a mutation inhibiting human immunodeficiency virus from entering the host cell
a mutation resulting in partial or complete loss of chlorophyll pigments in plants
a mutation resulting in a squirrel being born without ovaries
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a mutation inhibiting human immunodeficiency virus from entering the host cell
Answer:
B
Explanation:
Explain what happens to muscle force production at extremes of length
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What occurs when myocardial tissue is destroyed in areas of the heart that are deprived of an adequate blood supply??
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The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that
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explanation:
Water is essential for an abundance of life, and sunlight is the means by which the whole food chain receives energy. Plants convert the sunlight into food, herbivores eat them, and other animals eat herbivores.
Hope this helps, and muchas luck on your biology.
How does the fluid sideways motion of the plasma membrane allow water to freely pass into and out of the cell?
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A tissue in a mouse contains two types of cells: one that divides rapidly and one that divides more slowly. the most likely difference between these two cell types is that the slow-dividing cell type spends more time in _______ phase.
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A segment of DNA that is artificially created from two or more organisms through use of DNA enzymes in and out laboratory is called
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Answer:
Recombinant DNA.
Explanation:
DNA is the genetic material of almost all the living organism. The different organism has different band sue to the presence of short and sequence repeats and variable number of tandem repeats.
The molecular techniques allow the hybridisation of DNA of two different organism. The DNA produced by this process is known as recombinant DNA and the technology is known as recombinant DNA technology. This technology has importance in the medicine field.
Thus, the answer is recombinant DNA.
Which of the following arising out of mass extinction serves as an advantage to nature?
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The selection pressures before the extinction tend to favor a certain type of organism and the sudden shift in conditions help others move up the food chain.
What is a condition in which nerves are entrapped between the metatarsal heads producing swelling with distal, radiating pain?
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This is a condition which affects the nerves between your toes, and causes you to feel as if you were 'walking on a marble.' You feel constant pain in the ball of your foot which can be helped relatively easy if you change your footwear.
Explain why the distribution of biomes in the northern hemisphere is similar but not identical to the distribution of biomes in the southern hemisphere
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The distribution of biomes in the Northern hemisphere is similar but not identical to the distribution of biomes in the Southern hemisphere. The Northern hemisphere is characterized by long and cold winters while summers are short. The Southern hemisphere is not as colder as Northern hemisphere except Antarctica. More oceans are present in the Southern hemisphere while Northern hemisphere has larger portions of the land. Also, the mountains in the Northern hemisphere has mountains and land that act as obstruction for the wind. Whereas, the wind blows unobstructed in Southern hemisphere. These are the reasons for not having identical biomes in both the regions.
Why does the inactive x appear to stain much darker than the other chromosomes?
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An adolescent is diagnosed with iron deficiency anemia. after emphasizing the importance of consuming dietary iron, the nurse asks him to select iron-rich breakfast items from a sample menu. which selection demonstrates knowledge of dietary iron sources?
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How the changing species concept has affected classification systems
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Answer:
Affects directly.Explanation:
Affects directly because classification systems in biology are made with a logical structure of species to get ordered groups. For example, we have Taxonomy in biology, which is created to classify species; according to scientists this task has been doing for thousands of years ago, but had a big change of perception when Darwin published his Evolution Theory.
So, the last change in this subject was with Darwin. Modern system of classification is aimed to follow the Transmutation of Species, like Charles Darwin said.
As scientist discover new species, they have to add then in the data, that affected the classification systems.
What is a classification system?A classification system is a way to group and organize data to compare it with other data.
Different types of classification system used for different type of data.
Multiple classification systems may be used in some datasets.
As the science knowledge is elaborating, there are going to be changes in the classification system.
Thus, as the new species are discovering, that affected classification systems.
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Enzymes lower the amount of activation energy needed for a chemical reaction to take place. In the picture above, an enzyme inhibitor has been placed between the enzyme and the substrate. Which of the following ideas best explains what is happening in the picture.
The substrate will be able to bond with the enzyme and the reaction will take place.
The stubstrate will be unable to attach to the enzyme
The immune system will see the enzyme as a foreign invader and attack it.
The enzyme will be unable to produce more enzymes.
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Can you explain how the water and carbon dioxide get into the plant in order to do photosynthesis? Also, can you describe the pathway for glucose to get into an animal for respiration?
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A gamete from a human female contains _______. a gamete from a human female contains _______. 23 autosomes and a y chromosome 23 autosomes and either an x chromosome or a y chromosome. 22 autosomes, one x chromosome, and one y chromosome 22 autosomes and an x chromosome
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The DNA count of human is 44 autosome with 1 pair of sex chromosome. A gamete will have half of the genetic material of the cell which will result in 22 autosome with 1 of the sex chromosome(either X or Y)
Pain that is felt in regions other than the one where the source of the pain lies is​ called
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____________________________________
Referred Pain refers to pain that is perceived in areas different from the actual source of the pain. This phenomenon often results from shared nerve pathways between the site of the problem and the area where the pain is felt. This type of pain can, in some instances, be indicative of serious ailments such as heart attacks.
Explanation:The sensation of pain felt in regions other than where the source of the issue lies is known as Referred Pain. Referred Pain is often associated with visceral sensations (originating from organs within the body). For instance, patients experiencing a heart attack may feel pain in their left shoulder and arm, even though the problem lies in the heart, not the shoulder or arm. This seeming displacement of perceived pain occurs because these areas share nerve pathways with the 'problem' organ, in this case, the heart.
In this context, pain can generally be categorised into either neuropathic or inflammatory. Inflammatory pain results from tissue damage, while Neuropathic pain results from damage to neurons of either the peripheral or central nervous system, causing pain signals sent to the brain to be exaggerated. Suitable treatment for such pain varies and can range from relaxation therapy to the use of analgesic medications, to deep brain stimulation depending on various factors including the severity of the pain and any associated medical/psychological conditions.
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Which type of food service operation would likely produce the most number of carryovers each day?
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Fine dining and casual dining restaurants will produce the most number of carryovers, reasons explained herewith.
Fine dining restaurants offer a-la-carte or buffet menu options, in both cases the amount of customers are estimated basis the restaurant's historical experience and the current scenario in the market. The estimates are usually optimistic, thereby the supply would exceed the demand in most instances. The restaurant would not like to be short of food at any point in time as this will be a huge dent on their brand and credibility. The amount of food that customers order will vary as well, and not all customers tend to be disciplined when it comes to finishing whatever they ordered for - this will result in wastage or throw-aways as well.
Casual dining restaurants, like the above example, will also have a lot of carry-overs for the same reasons as fine dining restaurants. One difference is that the customers demographics in such restaurants are very different. They mostly comprise of youth and college goers, for whom traditionally, restaurant is a fun place and the objective is not only food. The behaviours and attitudes towards food in such places tends to be extremely casual as well, so the chances of wastage are higher. Possibilities of carry-overs in such restaurants could be far higher than the fine dining restaurants and there could be certain seasonal trends impacting their business as well.
Pizza parlor and quick service restaurants usually prepare food only after receiving the full orders and their menus have limited options as well, therefore, helping them to estimate their demand better.
Cafeteria always caters to a particular estimated number of people and the customers are mostly repeat ones, thereby making the estimation process and the delivery process more accurate, and thereby, reducing carryovers and wastage hugely.
The writing system used in mesopotamia is called ________.
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Final answer:
Cuneiform is the writing system used in Mesopotamia. It first started as a pictographic system but evolved to include both pictographs and syllabic symbols. The script allowed different Mesopotamian cultures to adapt it to their own languages.
Explanation:
The writing system used in Mesopotamia is called cuneiform. It was first developed around 3000 BCE to keep track of tax records. Originally, cuneiform started as a pictographic system where each word or idea was represented by a symbol. However, it later evolved to include both pictographs and syllabic symbols that represent sounds.
Cuneiform was a complex writing system that was used to symbolize a great number of sounds, allowing different Mesopotamian cultures to adapt it to their own languages. The script was initially read from left to right and bottom to top. Cuneiform was primarily used for record-keeping, but it eventually evolved to include the creation of true forms of literature.
The pancreas, an organ present in certain animals, produces enzymes used elsewhere in in the animals' digestive systems. which cell structure(s) might produce those enzymes?